OpenAI GPT-5.4 VS OpenAI GPT-5.6 Terra
Decision Recommendation
👑 Editorial Verdict: GPT-5.6 Terra strictly dominates GPT-5.4 across all compared dimensions. It is not only more cost-effective (blended cost of $5.63 vs $5.63 per 1M tokens) but also delivers superior coding accuracy (63.4% vs 57.7% on SWE-bench). Unless you have platform lock-in, GPT-5.6 Terra is the clear and optimal choice for all development workloads.
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Model Specs
GPT-5.4
Benchmarks & Scores
Coding (swe-bench-pro)
57.7%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
92.8%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$5.63Input: $2.50 | Output: $15.00Context Window
1.05M tokensModel Specs
GPT-5.6 Terra
Benchmarks & Scores
Coding (swe-bench-pro)Winner (+5.7%)
63.4%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+0.1%)
92.9%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$5.63Input: $2.50 | Output: $15.00Context Window
1.05M tokensFrequently Asked Questions about GPT-5.4 vs GPT-5.6 Terra comparison
Both GPT-5.4 and GPT-5.6 Terra cost the same, with a blended cost of $5.63 per 1 million tokens.
GPT-5.6 Terra is better for coding tasks on this benchmark. It scores 63.4% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to GPT-5.4 which scores 57.7%.
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